In the capital markets, the delivery instruction slip (DIS) is a vital document. When an investor wishes to sell or transfer securities from their demat account, the transaction must be authorised with a DIS. In most online trades, the client grants the broker power of attorney (POA) to debit the demat account against sale orders. This simplifies your life because you no longer have to worry about your DIS being rejected. In offline trades, however, you must still provide a signed DIS to the broker. The seller must fill out the slips because they are requesting a debit from their account. It can be used to transfer securities such as stocks, bonds, REITs, InvIts, Etfs, and so on.